The Metro asked a few men via an anonymous sex app called Whiplr why they like cuckolding.

One of these men included Simon, 29, an IT consultant from London - who likes to watch his girlfriend have sex with other men.

He said: "I’ve been into cuckolding for a while and do it with my girlfriend.

"What I like most is the feeling of helplessness. I guess that’s the turn-on, watching my girlfriend being taken by another man in front of me. I’m very dominant when we’re alone, but when another man joins us, I’m the cuck."

"It’s made us more passionate as a couple, although we have rules while we do it. Newbies who are starting out should take it slow and not dive in head-first. Things can go awfully wrong if the couple aren’t sure they would like it."

Harry, 55, a banker also from London prefers to cuckold the other way around.

He told the Metro: "I enjoy being the man invited to please a wife in front of her hubby. A few days ago, I visited a couple and was there for several hours.

"This particular husband is bisexual and will watch, as well as give me oral sex.

"He especially likes the humiliation of seeing his wife enjoy sex with another man. Sometimes, he’ll also be allowed to have sex with her."